Friday, February 17, 2012
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Tuesday, January 31, 2012
Anti-crepuscular rays
Polecat Bench. January, 2012
The term for rays cast by the setting sun is crepuscular--associated with twilight. They are caused by light passing through holes in the clouds, and they are actually parallel. It's a trick of perspective which makes it appear they originate from a single point. This photo was taken at sunset; it faces mainly to the east. Since the rays appear to be opposite the setting sun, they are called anti-crepuscular rays.
Saturday, January 28, 2012
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Thursday, January 19, 2012
Friday, January 13, 2012
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Friday, December 30, 2011
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